Error:The Mailbox server role isn’t installed on this computer.For more information, visit: https://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.UnifiedMessagingRoleNotInstalled.aspx

Error:The Mailbox server role isn’t installed on this computer.For more information, visit: https://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.BridgeheadRoleNotInstalled.aspx

Error:Global updates need to be made to Active Directory, and this user account isn’t a member of the ‘Enterprise Admins’ group.For more information, visit: https://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.GlobalUpdateRequired.aspx

Error:You must be a member of the ‘Organization Management’ role group or a member of the ‘Enterprise Admins’ group to continue.For more information, visit: https://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.GlobalServerInstall.aspx

Error:You must use an account that’s a member of the Organization Management role group to install or upgrade the first Mailbox server role in the topology.For more information, visit: https://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.DelegatedBridgeheadFirstInstall.aspx

Error:You must use an account that’s a member of the Organization Management role group to install the first Client Access server role in the topology.For more information, visit: https://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.DelegatedCafeFirstInstall.aspx

Error:You must use an account that’s a member of the Organization Management role group to install the first Client Access server role in the topology.For more information, visit: https://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.DelegatedFrontendTransportFirstInstall.aspx

Error:You must use an account that’s a member of the Organization Management role group to install or upgrade the first Mailbox server role in the topology.For more information, visit: https://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.DelegatedMailboxFirstInstall.aspx

Error:You must use an account that’s a member of the Organization Management role group to install or upgrade the first Client Access server role in the topology.For more information, visit: https://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.DelegatedClientAccessFirstInstall.aspx

Error:You must use an account that’s a member of the Organization Management role group to install the first Mailbox server role in the topology.For more information, visit: https://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.DelegatedUnifiedMessagingFirstInstall.aspx

Error:Setup encountered a problem while validating the state of Active Directory: Exchange organization-level objects have not been created, and setup cannot create them because the local computer is not in the same domain and site as the schema master. Run setup with the /prepareAD parameter on a computer in the domain and site , and wait for replication to complete. See the Exchange setup log for more information on this error.For more information, visit: https://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.AdInitErrorRule.aspx

Error:The forest functional level of the current Active Directory forest is not Windows Server 2003 native or later. To install Exchange Server 2013, the forest functional level must be at least Windows Server 2003 native.For more information, visit: https://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.ForestLevelNotWin2003Native.aspx

Warning:Setup will prepare the organization for Exchange 2013 by using ‘Setup /PrepareAD’. No Exchange 2007 server roles have been detected in this topology. After this operation, you will not be able to install any Exchange 2007 servers.For more information, visit: https://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.NoE12ServerWarning.aspx

Warning:Setup will prepare the organization for Exchange 2013 by using ‘Setup /PrepareAD’. No Exchange 2010 server roles have been detected in this topology. After this operation, you will not be able to install any Exchange 2010 servers.For more information, visit: https://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.NoE14ServerWarning.aspx